Storage battery.



no. 678,443. Patented Imy I6, Ism.

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v UNITED STATES "PATENT OFFICE.

WILLIAM JOSEPH STILL, OIF TORONTO, CANADA.

STO RAG E BATTERY.

SPECIFICATION forming part of Letters Patent No. 678,443, dated July 16, 1901. Application filed March Z4, 1899. Serial No. 710,355- (No model.)

T0 all whom it may concern:

Be it known that I,WILLIAM JOSEPH STILL, electrician, ofl the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and Yuseful Improvements in Storage Batteries, of which the following is a specification.

My invention relates to improvementsiu storage batteries; and the object of the invention is to produce a light, compact, and

'durable cell capable of sustaining its voltage under very rapid discharges; and'it consists, essentially, of electrodes of comb-like form, which are suitably held together at the bottom and the terminals separated from each other and supported by a suitably-slotted bar of insulating material and held from the bottom of the plate by an insulating-bar, the parts being constructed and arranged in detail as hereinafter more particularly explained.

Figure 1 is a perspective View of my improved storage cell, showing the arrangements of the electrodes, the cell being partially in section. Fig. 2 is a plan view. Fig.y

3 is a detail showing the construction of the electrodes. Fig. 4 is a .detail of the slotted insulating-bar.

In the drawings like letters of reference indicate corresponding parts in each figure.

Each electrode is formed with a back plate A, having stamped or formed out at the sides thereof the comb-like lingers or projections a. These ngers or projections are cut out on the flat by any'suitable cutting mechanism and then are each turned at right angles to the plane of the`plate A, after-which both groups at each side are bent inwardly,`as indicated in Fig. 3, so as to be at right angles to the main portion A of the plate. It will thus be seen that the fingers a, standing one directly above the other, present horizontal surfaces from end to end, between which is pasted the active material, as indicated in Fig. l, in which a' is the active material.

The top of the plate A is provided with a terminal tongue A. The two comb-like sides of the electrode are held together by the elastic bands B, which permit expansion and assist contraction. The bottom of each comblike side of the electrode is supported upon the insulating-bar C, provided with a bent 'end c and the bottom of the slotted bar D, which embraces the comb-like side of the electrode, the slot not extending to the bottom of the bar, thus holding the bar C away from the bottom of the cell.

I will suppose that A is the positive electrode-plate, and A2 and As are other elec'- trodes, formed precisely the same way with terminals A4 and A5. These electrodes are `formed precisely the same Way, with the ex= ception that the comb-like sides a are at less distances apart. The terminal tongues are preferably soldered together and provided with a central hole.

a2 represents lips forming part of the terminal tongues of the largest electrode-plate,

which are bent around the terminal tongues A4 and A5. v

a3 is a lip which forms part of the larger electrode and is bent around the bottom of the adjacent electrodes. This lip a3 is shown site polarity. The hole is made in the terminal of the plates A and E, the adjacent terminals of the positive plate of one cell'being connected to the negative terminals of the next cellby a bolt and nut 2 3, extending through'holes in the terminal tongues and formed of rubber.

By a construction such as I describe it will be readily understood that space is economized and the active material is preserved intact and the electrodes are necessarily very light. It will also be understoodwthat each series of comb-like fingers with the interposedactive material constitutes an electrode, and that such electrodes when formed in the U shape shown and described are arr ranged iu pairs of like polarity joined together, so as to occupy the minimum space in the cell and yet serve to greatly promote the efficiency of the battery by the relatively large area of active material securely exposed between the fingers of each series. The compactness and efficiency of the battery are also greatly promoted by the oppositely-disposed and similarly-constructed electrodes, all of which being U-shaped and those of each set fitting by pairs, one pair within the other, and arranged in staggered relation to the electrodes of the other set, takes up the minimum space while filling the same with great compactness, the insulating bars on the free end of each electrode serving the double pur- .prisiug a U-shaped plate having a body porpose of sustaining the fingers in place and as separators for the electrodes.

I am aware that a comb-like plate formed with twisted bars constituting the core of an electrode and upon which the active material is held by separatingplates has heretofore been proposed, and I am also aware that a series of bars have been formed in a rectangular frame by slitting a plate and turning the bars thus formed at right angles to the body ofthe plate, and I therefore do not claim such constructions,nor would such constructions subserve the purposes of my invention, nor do they enable the production of a battery possessing the many advantages of mine, nor one that may be as light, compact,or durable, or capable of sustaining its voltage under very rapid discharges, all of which are very essential points in both the practical and commercial value of a storage battery, particularly one adapted for use upon motor-vehicles.

Vhat I claim as my invention is 1. An electrode for storage batteries comprising a U-shaped plate having a body portion and a series of projections extending from opposite edges thereof, and at right an-v gles thereto, forming a pair of parallel combs,

said projections constituting supports for the active material and interposed therebetween, substantially as and for the purpose specied.

2. An electrode for storage batteries comprising a U -shaped plate having a body portion and a series of comb-like fingers projecting therefrom, at opposite sides thereof and as right angles thereto, said fingers being twisted so as to lie at right angles to the plane of said body portion and constituting a pair of parallel supports for the active material interposed therebetween,substantially as and for the purpose specified.

3. In a storage battery, aseries of U -shaped electrodes tting one within the other and each comprising a plate having a body portion and a series of comb-like fingers or projections at opposite edges thereof and extending at right angles to the body portion and a terminal on each of said body portions suitably connected together, said comb-like fingers constituting supports for the activematerial interposed therebetween, substantially as and for the purpose specified.

4t. In a storage battery, a series of- U-shaped electrodes tting one within the other and each comprising a plate having a body portion, comb-'like fingers or projections at opposite edges thereof and at rightangles to the body portion, terminals at the top of said body p ortion of each plate suitably connected together and a lip at the bottom of the body portion of the outer plate, which spans and embraces the bottoms of the adjacent plates connected thereto, the comb-like fingers on each 'plate constituting supports for the active material interposed therebetween, substantially as and for the purpose specified.

5. An electrode for storage batteries comtion and a series of comb-like fingers projecting therefrom at opposite edges thereof and at right angles thereto, said fingers constituting a pair of parallel supports'for the active material interposed therebetween, and elastic bands embracing said comb-like fingers, substantially as and for the purpose specified.

(i. An electrode for storage batteries-comprising a U-shaped plate having a body portion and a series of comb-like fingers-projecting therefrom at opposite edges thereof and at right angles thereto, said fingers constituting a pair of parallel supports-for the active material interposed therebetween and a slotted insulating-bar fitted to embrace the free ends of each series-of comb-like fingers, substantially as and for the purpose specified.

7. An electrode for storage batteries comprising a U-shaped plate`having a body portion and a series of comb-like fingers projecting therefrom at opposite edges thereof and at right angles thereto,said fingers constituting a pair of parallel supports for the active material interposed therebetween, elastic insulating-bands embracing Said comb-like 1ingers and a slotted insulating-bar tted to embrace the free ends of each series of comblike fingers, substantially as and for the purpose specified.

8. An electrode for storage batteries comprising a plate having a body portion and a series of comb-like fingers projectingv therefrom at opposite edges thereof and at right angles thereto, said fingers constituting supports for the active material interposed therebetween, a slotted insulating-bar fitted to embrace the free ends-of each series of comblike fingers and the bottom insulating-bar forming a support for the fingers and provided with a bent end next the body portion of the plate, as and for the purpose specified.

9. An electrode for storage batteries comprising a plate having a body portion and a series of comb-like fingers projecting therefrom at opposite edges thereof and at right angles thereto, said fingers constituting supports for the active material interposed therebetween, elastic insulating-bands embracing said comb-like fingers, a slotted insulatingbar fitted to embrace the free ends of each series of comb-like fingers and the bottom insulating-barforming a support for the fingers and provided with a ben-t end next the body portion of the plate, as and for the purpose specified.

IOO

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10. Ina storage battery, the combination of a series of electrodes each comprising two series of comb-like fingers joined in pairs by connecting plates at right angles thereto, each pair being placed between a wider pair of like polarity and the connecting-plates being electrically connected together, as and for the purpose specified.

11. In a storage battery, the combination of a series of electrodes each comprising a series of comb-like fingers joined in pairs and constituting supports for the active material interposed therebetween, and each pair being placed between a wider pair of like polarity and insulating slotted bars embracing the free ends of each series of fingers, substantially as and for the purpose specified.

12. In a storage battery, the combination of a series of electrodes each comprising a series of comb-like lingers joined in pairs and constituting supports for the active material interposed therebetween, a bottom insulating-bar forming a support for the fingers and provided with a bent end next the connected ends of the series of fingers, an insulating slotted bar embracing the free ends of each series of fingers and the bottom bar, substantially as and for the purpose specified.

13. In a storage battery, the combination of a series of electrodes each comprising a series of comb-like fingers joined in pairs and constituting supports for the active material interposed therebetween, a bottom insulating-bar forming a support for the iingers and provided with a bent end next the connected ends of the series of fingers, elastic insulating-bands embracing each series of fingers and the bottom bar at each end thereof and an insulating slotted bar embracing the free end of' each series of fingers and the bottom bar, substantially as and for the purpose specified.

14. In a storage battery, the combination of two series of electrodes each comprising plates having a series of comb-like fingers or projections at opposite edges thereof and at right angles thereto, said fingers being twisted so as to lie in planes at right angles to that of the plate, the series of comb-like projections in each set of electrodes being arranged in staggered relation with those of the other set, substantially as and for the purpose specified.

15. In a storage battery, the combination of two series of electrodes each comprising plates having a series of comb-like fingers or projections at opposite edges thereof and at right angles thereto, said fingers being twisted so as to lie in planes at right angles to that of the plate, the series of comb-like projections in each set of electrodes being arranged in staggered relation with those of the other set, and insulating slotted bars embracing the free end of each series of fingers, substantially as and for the purpose specified.

WILLIAM JOSEPH STILL.

Witnesses:

B. BOYD, H. DENNIsoN. 

